- a state of Nigeria, in the E on the border with Cameroon. Capital: Yola. Pop: 3 168 101 (2006). Area: 36 917 sq km (14 254 sq miles)
- a small group of languages of W Africa, spoken chiefly in E Nigeria, N Cameroon, the Central African Republic, and N Democratic Republic of Congo (formerly Zaïre), forming a branch of the Niger-Congo family